建BBS建表遇到问题

我有3张表如下
用户表:
create table User
(
   id                             int    auto_increment          not null,
   name                           varchar(50)                    not null,
   pwd                            varchar(50)                    not null,
   primary key (id)
)
type = InnoDB;
版面表:create table Board
(
   id                             int     auto_increment         not null,
   create_by                      int                            not null,
   parent_id                      int,
   name                           varchar(50)                    not null,
   remark                         varchar(255),
   create_time                    datetime                       not null,
   index (create_by),
   foreign key (create_by) references user(id)
   on delete cascade
   on update cascade,

   index(parent_id),
   foreign key (parent_id) references Board(id)
   on delete cascade
   on update cascade,
   primary key (id)
)
type = InnoDB;
文章表:create table Article
(
   id                             int     auto_increment         not null,
   parent_id                      int,
   board_id                       int                            not null,
   article_type                   int                            not null,
   title                          varchar(255)                   not null,
   body                           text,
   create_by                      int                            not null,
   create_time                    datetime                       not null,
   hits                           int                            not null,
   bytes                          int,
   last_update_by                 int                            not null,
   last_update_time               datetime                       not null,

   index (parent_id),
   foreign key (parent_id) references article (id)
   on delete cascade
   on update cascade,

   index (board_id),
   foreign key (board_id) references board (id)
   on delete cascade
   on update cascade,

   index (create_by),
   foreign key (create_by) references user (id)
   on delete cascade
   on update cascade,

   index (last_update_by),
   foreign key (last_update_by) references user (id)
   on delete cascade
   on update cascade,

   primary key (id)
)
type = InnoDB;

通过以上SQL语句建了3张表,用的是mysql数据库
用eclipse+myeclipse开发
自动生成映射文件*.hbm.xml和POJO类
其中user.java为

public class User implements java.io.Serializable {

// Fields

private Integer id;

private String name;

private String pwd;

private Set articlesForLastUpdateBy = new HashSet(0);

private Set boards = new HashSet(0);

private Set articlesForCreateBy = new HashSet(0);

// Constructors

/** default constructor */
public User() {
}

/** minimal constructor */
public User(String name, String pwd) {
this.name = name;
this.pwd = pwd;
}

/** full constructor */
public User(String name, String pwd, Set articlesForLastUpdateBy,
Set boards, Set articlesForCreateBy) {
this.name = name;
this.pwd = pwd;
this.articlesForLastUpdateBy = articlesForLastUpdateBy;
this.boards = boards;
this.articlesForCreateBy = articlesForCreateBy;
}

// Property accessors

public Integer getId() {
return this.id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return this.name;
}

public void setName(String name) {
this.name = name;
}

public String getPwd() {
return this.pwd;
}

public void setPwd(String pwd) {
this.pwd = pwd;
}

public Set getArticlesForLastUpdateBy() {
return this.articlesForLastUpdateBy;
}

public void setArticlesForLastUpdateBy(Set articlesForLastUpdateBy) {
this.articlesForLastUpdateBy = articlesForLastUpdateBy;
}

public Set getBoards() {
return this.boards;
}

public void setBoards(Set boards) {
this.boards = boards;
}

public Set getArticlesForCreateBy() {
return this.articlesForCreateBy;
}

public void setArticlesForCreateBy(Set articlesForCreateBy) {
this.articlesForCreateBy = articlesForCreateBy;
}

}


其中user.hbm.xml文件内容为
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
    Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
    <class name="cn.tiger.config.User" table="user" catalog="test4">
        <id name="id" type="java.lang.Integer">
            <column name="id" />
            <generator class="increment" />
        </id>
        <property name="name" type="java.lang.String">
            <column name="name" length="50" not-null="true" />
        </property>
        <property name="pwd" type="java.lang.String">
            <column name="pwd" length="50" not-null="true" />
        </property>
        <set name="articlesForLastUpdateBy" inverse="true">
            <key>
                <column name="last_update_by" not-null="true" />
            </key>
            <one-to-many class="cn.tiger.config.Article" />
        </set>
        <set name="boards" inverse="true">
            <key>
                <column name="create_by" not-null="true" />
            </key>
            <one-to-many class="cn.tiger.config.Board" />
        </set>
        <set name="articlesForCreateBy" inverse="true">
            <key>
                <column name="create_by" not-null="true" />
            </key>
            <one-to-many class="cn.tiger.config.Article" />
        </set>
    </class>
</hibernate-mapping>



然后写了一个测试类TestCRUD.java

public class TestCRUD extends TestCase {
Session session = null;

protected void setUp() throws Exception {
Configuration cfg = new Configuration().configure();
session = cfg.buildSessionFactory().openSession();
}

protected void tearDown() throws Exception {
session.close();
}

public void testCRUD() throws HibernateException{
Transaction tra = null;
tra = session.beginTransaction();
User user = new User();
user.setName("someone");
user.setPwd("guessme");
session.save(user);
session.flush();

User user2 = (User) session.load(User.class, user.getId());
assertEquals("someone",user2.getName());
assertEquals("guessme",user2.getPwd());

user2.setPwd("guessAgain");
session.saveOrUpdate(user2);

session.flush();

user = (User) session.load(user.getClass(), user.getId());
assertEquals("guessAgain",user.getPwd());

session.delete(user);
session.flush();
tra.commit();
}

}


但却出现这样的异常:org.hibernate.PropertyNotFoundException: Could not find a getter for articlesForLastUpdateBy in class cn.tiger.config.User
at org.hibernate.property.BasicPropertyAccessor.createGetter(BasicPropertyAccessor.java:282)
at org.hibernate.property.BasicPropertyAccessor.getGetter(BasicPropertyAccessor.java:275)
at org.hibernate.mapping.Property.getGetter(Property.java:260)
at org.hibernate.tuple.PojoEntityTuplizer.buildPropertyGetter(PojoEntityTuplizer.java:255)
at org.hibernate.tuple.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:121)
at org.hibernate.tuple.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:55)
at org.hibernate.tuple.TuplizerLookup.create(TuplizerLookup.java:64)
at org.hibernate.tuple.EntityMetamodel.<init>(EntityMetamodel.java:257)
at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:412)
at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:108)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:216)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1176)
at cn.tiger.test.TestCRUD.setUp(TestCRUD.java:16)
at junit.framework.TestCase.runBare(TestCase.java:125)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:128)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)


大家吧,谢谢了


[b]

评论

1 楼 tigershi10 2007-08-27  

这个问题搞的我很郁闷,我想连这个问题都搞不定,以后还怎么混啊
大家吧,谢谢了